SML-LX2723SYC-TR LED TitanBrite Yellow 590nm Equivalent & Substitute Parts

Part Overview

The SML-LX2723SYC-TR is a surface mount LED from Lumex Opto/Components Inc. featuring TitanBrite Yellow technology with a nominal wavelength of 590nm. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing production and maintenance applications. The part is housed in a 2-SMD, Gull Wing Exposed Pad package with a maximum forward voltage of 2V at 350mA test current and delivers 31 lumens at 25°C ambient temperature.

Substiute Parts

SML-LX2723SYC-TR

Lumex Opto/Components Inc.In Stock: 953SML-LX2723SYC-TR Datasheet

Current PartRFQ

SML-LX1610SYC/A

Lumex Opto/Components Inc.In Stock: 1148SML-LX1610SYC/A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SML-LX2723SYC-TR is determined by the following critical parameters:

Mandatory Matching Criteria:

• Manufacturer: Lumex Opto/Components Inc.
• Series: TitanBrite™
• Color: Yellow
• Wavelength: 590nm (Typical)
• Current Rating: 350mA maximum
• Mounting Type: Surface Mount
• RoHS3 Compliance
• REACH Unaffected Status

Allowable Variation Parameters:

• Forward Voltage (Vf): ±0.1V tolerance acceptable within LED specifications
• Viewing Angle: ±10° variation acceptable for general illumination applications
• Package / Case: Alternative SMD packages permitted if PCB footprint compatibility is verified
• Luminous Flux: Specification-dependent; range variation acceptable within datasheet limits
• Moisture Sensitivity Level: Lower MSL values (2 or 1) represent improved moisture resistance and are acceptable substitutes
• Height - Seated: Variation acceptable if PCB clearance is verified

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The SML-LX1610SYC/A from Lumex Opto/Components Inc. qualifies as a functional equivalent to the obsolete SML-LX2723SYC-TR based on matching wavelength (590nm), color (Yellow), current rating (350mA), forward voltage tolerance (2.1V vs. 2.0V), and regulatory compliance (ROHS3, REACH Unaffected).

Critical Design Considerations:

1. Package and Footprint Change: The substitute part uses a TO-252-3 DPAK package versus the original 2-SMD Gull Wing Exposed Pad. PCB layout redesign is required. The substitute occupies a larger footprint (8.50 × 8.50 mm vs. 7.00 × 6.00 mm) and greater height (3.30 mm vs. 1.60 mm seated).

2. Viewing Angle Reduction: The substitute provides a 110° viewing angle compared to the original 120°. This represents a 10° narrower beam angle and may affect light distribution in applications requiring wide-angle illumination.

3. Moisture Sensitivity Improvement: The substitute carries MSL 2 (1 Year) versus MSL 3 (168 Hours), indicating superior moisture resistance and reduced risk during storage and assembly.

4. Product Status: The substitute is in active production status, ensuring long-term availability and supply chain stability compared to the obsolete original part.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH Unaffected status, satisfying environmental and hazardous substance restrictions.

Frequently Asked Questions (FAQ)

Q1: Can the SML-LX1610SYC/A directly replace the SML-LX2723SYC-TR without PCB modification?

A: No. The substitute part uses a different package type (TO-252-3 DPAK vs. 2-SMD Gull Wing Exposed Pad) and has different footprint dimensions and height. PCB layout redesign and revalidation are required.

Q2: What is the impact of the 10° viewing angle difference?

A: The substitute provides a narrower beam angle (110° vs. 120°). In applications requiring wide-angle light distribution, this may result in reduced light coverage at extreme viewing angles. Application-specific testing is necessary to confirm suitability.

Q3: Are the forward voltage specifications compatible?

A: Yes. The substitute forward voltage of 2.1V at 350mA test current is within acceptable tolerance of the original 2.0V specification. Circuit design should accommodate this 0.1V variation through appropriate current-limiting resistor selection.

Q4: Does the improved MSL rating affect component handling?

A: The substitute's MSL 2 rating (1 Year) provides extended moisture protection compared to MSL 3 (168 Hours). This reduces moisture-related failures during storage and assembly, provided standard moisture control procedures are maintained.

Q5: Are both parts compliant with current environmental regulations?

A: Yes. Both the SML-LX2723SYC-TR and SML-LX1610SYC/A are ROHS3 Compliant and REACH Unaffected, meeting current environmental and hazardous substance restrictions.

Q6: What is the availability status of each part?

A: The original SML-LX2723SYC-TR is obsolete with 890 pieces in current inventory. The substitute SML-LX1610SYC/A is in active production status with 1069 pieces in inventory, ensuring continued supply chain access.

Q7: Are there luminous flux specifications for the substitute part?

A: The substitute part does not provide luminous flux data in the available specifications. The original part delivers 31 lumens at 350mA and 25°C. Luminous flux verification through the manufacturer datasheet is required for the substitute.